| All-Time Pitching Leaders | ||
| Career Innings Pitched Leaders | ||
| Rank | Player | IP |
| 1. | Cy Young | 7355.0 |
| 2. | Pud Galvin | 5941.0 |
| 3. | Walter Johnson | 5916.0 |
| 4. | Phil Niekro | 5403.2 |
| 5. | Nolan Ryan | 5387.0 |
| 6. | Gaylord Perry | 5352.0 |
| 7. | Don Sutton | 5281.2 |
| 8. | Warren Spahn | 5246.0 |
| 9. | Steve Carlton | 5216.1 |
| 10. | Grover Alexander | 5182.0 |
| 11. | Kid Nichols | 5084.0 |
| 12. | Tim Keefe | 5072.0 |
| 13. | Greg Maddux | 5008.1 |
| 14. | Bert Blyleven | 4969.1 |
| 15. | Roger Clemens | 4916.2 |
| 16. | Mickey Welch | 4801.0 |
| 17. | Tom Seaver | 4782.0 |
| 18. | Christy Mathewson | 4779.0 |
| 19. | Tommy John | 4707.1 |
| 20. | Robin Roberts | 4689.0 |
| 21. | Early Wynn | 4566.0 |
| 22. | Tony Mullane | 4540.0 |
| 23. | John Clarkson | 4537.0 |
| 24. | Old Hoss Radbourn | 4535.0 |
| 25. | Jim Kaat | 4527.2 |
| Active players shown in CAPS | Last Updated: Fri May 25 08:15:04 EDT 2012 | ||